10.Researchers wanted to determine if carpeted rooms contained more bacteria than uncarpeted rooms. To determine the number ofbacteria in a room, researchers pumped the air from the room over a Petri dish at the rate of 1 cubic foot per minute for eightcarpeted rooms and eight uncarpeted rooms. Colonies of bacteria were allowed to form in the 16 Petri dishes. The results shownbelow are bacteria counts per cubic foot.Carpeted roomUncarpeted roomMeanStandarddeviationSample size11.2 2.67749.7875 3.2188Test using a significance level of 0.01 whether the mean bacteria count is higher for carpeted rooms than for uncarpeted rooms.Show all steps using the critical value method. The value of the test statistic is t=0.955 and the p-value is 0.1778. Show your nulland alternative hypothesis and state your conclusion.

To test whether the mean bacteria count is higher for carpeted rooms than for uncarpeted rooms using…

Answered: 10.Researchers wanted to determine if…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Three products were used in a hot summer to keep the pool chlorine level high. Each product was used in 6 pools, and there was a total of 18 pools in the experiment. The same amount of chlorine was added to each pool (A, B, or C) and the conditions such as pool size, temperature, sun exposure etc. were similar. The chlorine levels (%) were measured and recorded after 24 hours of using the products. The percentages in the table below are the percentage of the chlorine added to the pool remaining after this 24 hours. The data is as follows: A 96 56 52 66 70 60 B 44 36 34 50 40 48 с 723227 34 40 20 24 a) Find the overall mean of the chlorine level across all the pools measured, and then find the mean of the chlorine level for each product.
The flight from Greenville to Charlotte can take anywhere from 43 minutes to 68 minutes. Suppose the random flying times, X, are uniform from 43 to 68 minutes. On average, how long does it take to fly from Greenville to Charlotte? μX=μX= Do not round.
Help please!
In the table below is a column of masses for various individuals. 20 Kg (kllograms), for instance, is a typical mass for a young child while 80 kg Is characteristic of an adult's mass, If you were to travel to the Moon, your weight would change but your mass would remain the same. Roughly speaking, mass is a measure of the amount of "stuff" you're made of (matter). In the United States we commonly measure weight using the English pound. Another common unit for measuring weight is the Newton. The second column in the table shows the corresponding weight, in Newtons, for each individual. These are the weights on Earth. Plot each pair of numbers as an ordered pair on the graph. Use the vertical ("y") axis for the weights and the horizontal ("x") axis for mass. Label your axes. Draw a best fit line through the points and measure the slope of this line. On your plot, mark and circle the points you use to determine the slope. The slope gives you the "weight per unit mass" here on Earth. In…
At the auction of the music collection, there is 1 masterpiece sheet music whose composer is unknown. A professor from the College of Music, Universität der Künste Berlin was asked to analyze who the score composer is. You are asked to help analyze statistically. The professor saw there were 2 names who may have been the composer, namely: Johann Strauss II and Tchaikovsky. The the professor also provides general data, namely the average number of tones per bar of each composer. Give the results of your analysis, who is the composer of the sheet music. Calculations are made using a spreadsheet! Note: Take the last 3 digits of your ID (2602296545 ). Use the step below: 1. For example, for example ID 2602296545 → 545 is taken. 2. Replace number 5 with number 1; example: ID 545 → 145 3. Last 3 digits of your new ID == abc; example 145: a = 1, bc = 45.
A lab technician's volume measurements are consistently 8% too high. What is the correct measurement if this technician records a volume of 172 mL?
A traffic office in a country was in charge of a study where the safety of passengers in different types of cars was examined. Three models were examined; small cars, minivans and SUVS and six cars in each category were inspected. A special traffic accident simulator was used in the study and the pressure on the drivers' heads was measured. Umferðarastofa wanted to investigate whether there was a difference in the average pressure on the head during a collision in these three types of cars and used a variance analysis for this purpose. Failed to complete the square sum table, which can be seen below. weekend sum degree of freedom ave week sums between groups (area) 725.4 within groups (area) 178.6 XXX total Questions 1-3 deal with this study by the Traffic Authority. Question 1 What value should be given where xxx is in the table? 1 1.91 2. 2679 3. 3036.2 4. The information provided cannot be answered. Question 2 to be used to check if there is a difference in the average- What is the…
The chlorine added to swimming pools to combat relatively short shelf before it loses its effectiveness. Records indicate that the mean shelf life of a 5 gallon jug of chlorine is 2,160 hours (90 days). As an experiment, Holdlonger was added to the chlorine to whether it would increase the shelf life of the chlorine. A sample of nine jugs of chlorine had these shelve lives (in hours): 2,159, 2, 170, 2,180, 2,179, 2,160, 2,167, 2,171, 2,181 and 2,185. At the .025 significance level, has Holdlonger increased the shelf life of the chlorine? S=9.3823, sample mean=2172.44 STATE THE NULL AND ALTERNATE HYPOTHESIS. Determine the critical value for the decision rule.
1. A gold-colored ring has a mass of 18.9 grams and a volume of 1.12 mL. Is the ring pure gold? Pure gold is 19.3 g/mL
During one the nurse’s hourly assessments, Ana is lethargic, her respirations are 8/minute and her DTRs are absent. The nurse identifies this as magnesium sulfate toxicity and after informing the obstetrician the following is ordered: stat magnesium level, stop the magnesium infusion, calcium gluconate, 1 gm IVP over 3 mins. One hour later her magnesium level is 7 mg , therapeutic for preeclampsia (4.7 to 8 mg/dl). The nurse evaluates the intervention. The patient has normal CNS functioning; is alert and oriented; respiratory rate is 16; DTR 2+, and urine output 75 mL so the magnesium sulfate is restarted at 1 g/hr per provider order. With the same solution of 40 g/liter, at what rate (mL/hr) would the nurse set the infusion pump?

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